If \(\mathbb {V}\)  is bounded and the constraints applied over \(\bar{\mathbb {V}}\)  have the simple forms \(\bar{{v}}_i\le a_i\)  or \(\bar{{v}}_i=a_i\) , where \({a}\in {\mathbb {R}}^{N}\)  is a constant vector (such as constraints (REF ) and ()), it can be proved that \(\mathcal {P_{ME}}\)  belongs to the exponential family [1]}, [2]}:
\(\mathcal {P_{ME}}({v}) \propto e^{{\beta }^T {v}}\) 
